Written By Alex Wong.
Last updated: 29 Oct 2026.
How Are Real Diamonds Made?
What Are Diamonds?
Diamonds are the hardest natural material on Earth and a symbol of beauty and strength. Their hardness makes them suitable for jewellery as well as many industrial uses. People value diamonds not only for their bright sparkle but also for their rarity and the extreme conditions needed to form them.
Diamonds form under extreme pressure and high temperatures deep within the Earth's mantle. They are made almost entirely of carbon atoms arranged in a crystal structure called a diamond lattice, and this structure gives diamonds their well-known brilliant sparkle.
Diamonds take a very long time to form through slow geological processes, and they stay intact on their way up from deep inside the Earth, which shows how durable they are. Only then can they become treasured pieces of jewellery.
What Are Diamonds Made of?
Diamonds are primarily composed of carbon, arranged in a highly organized crystal structure
known as the diamond cubic. Under extreme
conditions of heat and pressure found deep within the Earth’s mantle, these carbon atoms
bond in this unique pattern.
This arrangement not only bestows diamonds with their unmatched hardness but also
contributes to their optical properties, such as high refractive index and dispersion. This
crystalline structure is what allows diamonds to capture light and reflect it with an
unmatched brilliance.
How Are Diamonds Formed?
Diamonds form deep within the Earth's mantle, about 90 to 130 miles down, under conditions of intense heat and pressure. Here, carbon atoms bond together in a unique crystal structure that gives diamonds their hardness. This process takes billions of years.
How Long Does It Take a Diamond to Form?
The creation of a diamond is a slow process, often taking 1 to 3.3 billion years. This long formation period contributes to the rarity and value of diamonds, making each stone a marvel of nature.
Why Choose Real Diamonds Over Lab-Grown?
The Value and Authenticity of Natural Diamonds
Natural diamonds are valued not only for their physical properties but also their authenticity. Each natural diamond carries a unique history of formation over billions of years, which is documented from the mine to market. This traceability adds to the authenticity that lab-grown diamonds, which are manufactured over a short period, cannot match. Additionally, the unique imperfections and color variations in natural diamonds often enhance their value and appeal.
Long-Term Investment and Resale Value
From an investment perspective, natural diamonds have historically shown stability in value, particularly for rare and high-quality stones. This stability is partly due to their limited natural supply. In contrast, lab-grown diamonds can be produced in larger quantities as technology advances, which may lead to depreciation over time. While both types of diamonds have intrinsic value, the resale market for natural diamonds tends to be more robust, reflecting a preference for natural stones among collectors and luxury goods consumers.
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Choose Your Diamond
We highly recommend booking a personal viewing appointment for the best experience. Seeing and testing our
diamonds in person allows you to truly appreciate their beauty and ensures the perfect fit.
When scheduling your visit, please share your preferences and budget with us. We are dedicated to providing
tailored recommendations and are eager to assist you in selecting the ideal
gift.
